⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-50307815, with some changes.
This name is a synonym of Philadelphus gordonianus var. columbianus (Koehne) Rehder.
The record derives from Tropicos which reports it as a synonym (record 50307815) with original publication details: Gartenflora 1896: 542 542 1896.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:192766-2.